Money

6. David Koch (tie) -- The billionaire is co-owner (with older brother Charles) and an executive vice president of Koch Industries, a conglomerate that is the second-largest privately held company in the U.S. He's worth an estimated $42.9 billion.

As top GOP presidential candidates arrived at a hotel here to court the influential donors of the Koch network, Charles Koch called on retreat attendees to unite with him in a campaign against "corporate welfare" and "irresponsible spending" by both ...

Japanese police have arrested the head of the Mt.Gox bitcoin exchange company over the loss of a "massive amount" of the virtual online currency. Mark Karpeles was detained Saturday, the Tokyo company said.

The number of registered silencers surged 38% from last year to 792,282 in February 2015, according to the most recent figures from the Bureau of Alcohol, Tobacco, Firearms and Explosives. There were 571,750 licenses in...